Home / 13,304.15-18,360.57-7,640.70

Finding the Fourth Proportional to 13,304.15, 18,360.57 and 7,640.70

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Solution

The fourth proportional to 13,304.15, 18,360.57 and 7,640.70 is: 10,544.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,304.15 : 18,360.57 = 7,640.70 : x
  2. Step 2: Convert to fraction form
    13,304.15/18,360.57 = 7,640.70/x
  3. Step 3: Cross multiply
    13,304.15x = 18,360.57 × 7,640.70
  4. Step 4: Simplify right side
    13,304.15x = 140,287,607.20
  5. Step 5: Solve for x
    x = 140,287,607.20/13,304.15
  6. Step 6: Final answer
    x = 10,544.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.